Evaporator.



R. J. COACH. V

EVAPORATOR.

Awucmou' FILED APR. 1. 1912.

Paiented Mar. 271917.

a/ L) .1 r1 HH p 16% 0 her proforablv' has a steam jacket or s UNI-TED STATES PATENT onnrcn.

RICHARD J. COACH, 0F CLEVELAND, OHIO, ASSIGNOR TO THE SUB-SURFACE.VACUUM DEVELOPMENT COMPANY, OF CLEVELAND, OHIO, A CO BIPORATION OF OHIO.

nvaronmnon.

1 Jean; 94..

Specificatidn of Letters Patent.

Patented Mar. 27, 1917? Application filed April 1, 1912. Serial No. 687. 321.

To oil whom it mm; concern:

Be it loiown. that l, linumno Coaon, a citizen ol the United States, residing at Cleveland. in the county of tluyahoga and hit-ate ol ()hio, have invented a certain new and useful. .lmprowmnint in Evzu'nn'ators,

oi which the following a full, clear, and

Ir made to travel repeatedly in a path which spare. Tl'iese air passages and space 8 surrairies it down into; and then along in. and

.pmtcd by sa d Frame. The inlet end of this;

then out of said fluid. It also consists in the combinatimi with such lll-Pllllb of'a. vacluun producing device to n'ornote evaporation and to carry away the produced vapor. It also consists. of various other novel features of lJU1lSij-lllCtl( 1l,' and combinations of parts which are shou'n'in the drmv-ings and hereinafter described, all of 'which will. be definitely. pointed out in the claims;

The drawing" shows an aprnxratuswhich is organized witn special reference to its use for evaporat be used for eiuiporating other fluids and is susrcptiblc ol. iu'zalilioation to adapt it lor any special use. i I

.ln thedrawiing; Figure l is asectional side elevation ol :1 machine embodying he invention. .l: .l is a vertical transrersc section. I Referring to the parts by reference lcttors, 1 ruprvsunta the m-"aporul'ing chamber having a pan-shapial bottom. This chainbeneath it into which steam may be deliverial from lnrlorated pipes 23, said spate having a vatcr outlet 4.

There are air passages 5 at the sides of the evaporating chamber extending the entire length thereof; and in the walls of said ohaix'ihor are longitiulinally extended. slots (1 through which vapor may be drawn from the chamber into said passages. These pas sages are connected with a suction Fan 7 or other suitable vacuum Tu'oducing mstruuurutalily. In the 's'rwril ic construction shown the passages oouui'uuiicate at their lower ends with a spare 8 below thestean'i jacket and the suction fan is conncctcdwith this inn milk. but it may .oi course.

pace 2" round the evaporating chamber on. three sides. The vapor drawn through these paseages and space hot, and as it flows through the stzu ed paths will give up some of its heat to. th 5 walls of said chamber.

Above the evaporating chamber crank shaft S) from the cranks of which two bars 10 are loosely l: ung. These bars may each be formed of tn 0 parts coi'lnected by a turn. buckle 10, by w hich they may be'icngthencd or shortencr-l as ltlqllllfld. The end member's 12 of the coil supporting frame 13 arr loosely auspendid from the lower ends oi these bars.

171: represents a steam coil which. is supeoil Ll iocomectcd by a flexible pipe in with a steam so any pipe 19. The discharge end 1 1." of said coil is connected by :1 flexible pipe 17 with a rater discl'iarge pipe 18.

The term co 1. as used is not intended to imply that it must consist of any particular number of pipes or that they should/be connected in series, or have any particular form. The coil may, in .fact, consist of one or more pipes, it means are provided for running! steam ti pass through them. In the particular cons auction shown the coil con of pipe hmt fan'wise to form a plu fillllty of parallel transversclj; extended tubular members which are connected in. series and lie ally in the same horizontal plane. v

The bars 10 and the I ll-EXlblCUllJlS 16 and 17 pass out ol the evaporation chamber through holes i0" in the cover or top 20 0i said chamber. in order that a suitable do groc of suction in the evaporating chamber may be produced by the suction fan, these holes are mad"; as Sll'lflll' as circumstances will permit. l a

In using this nnu'hinc so much of the fluid in be cvaporatul is placed intli'e evaporating: rl aunbor l as \vill'hring the surface level thereof; in sin-h a plane thatthe coil \vill be li'lled abovetlo surface when raised, and. will he sulnrmrn'rd when lowered. i

As the shaft 9 is 'rotated the steam coil will be plungrd down into the fluid and. raused lo nuno transversely therein in a shorl nu 'rred. '1): th and to bethen \v. tlidralvn, this movement being repeated ivitheach remlution of ti 1e shaft. The shaft is prefer-- ahly rotated at'such a speed that as the coil enters the fluid, it will entrain or draw in "with it some air. The heated coil will evenl im art some of its heat to'the fluid wit which it contacts, and will therebiy assist in keeping said fluid at the require tem erature to promote its evaporation. hese 'coils,'as theyare drawn out of the fluid, will be wet with a .thin 'film thereof, and the -moisture of this film will'be partially evaporated throughthe actionof the heated coil and the partial vacuum in the-chamber 1 before the coil is. again plunged intothe fluid. The movement of these coils into, and along .inand then outfof the fluid produces ,a degree, of "agitation of -,the fluid which also promotes its evaporation.

- It is, of course, to :be unde tood that the suction fan is in constant operation, and

that it will act to draw through slots 6 the produced vapor, and to 'produce 1n" the evaporatingchambe'r a partial vacuum such as will promote evaporation. As'theevaporation proceeds a fresh supply of flu1d may I be slowly added so. as to preservethe required surface level.'.

Having described my'invention, I claim: 1. In an evaporator, the combination of i an evaporating panlfor containing ,fluid to be vaporized, a heating device, and means for repeatedly reciprocating said device to move it into and out of the fluid in the pan,

. during'the evaporation of a given charge of 2. In an an evaporating'chamber, a heating device, means'for impartingto said devlce a reciprocating movement which carries it repeat- ,edly into and out of the fluid 1n said chamher during the evaporation of a given charge of fluid, and means for withdrawing the produced vapor'from said chamber.

3. In an evaporator, the c0mbihation of an evaporating chamber, a steani carrylng heating device, and means for repeatedly. re-

ciprocating said device which carries it down into and outof a fluid in said chamber, dur- '-ing"the evaporationof a givenfchargeof 4. In an evaporator, the combination of an-evaporatingchamber, an airgpassage by the side of the sarne,the partitionflbetween said air passage and evaporating-chamber having-an openingthrol'lgh-it-wliich placessaid chamber and passage to {communication, a suct onjinducmg 'dev'ice-connectedwith said air passage, and means forheating the .contents of said chamber.

5. In --an evaporator, the combination of an evaporating chamber, an air passageby evaporator, the combination of the side of the same,th'e 'partition between said air passage and evaporating chamber having an opening'through it which places said chamber and passage in communicatioig 'a" suction inducing. device connected with said-air passageand a heating device in said chamber. g

6. In an evaporator, the combination of an evaporating'chamber, a steam jacket beneath the same, an air passage by the side of said chamber and in communication there- .with through an opening in. the partition wall between them, asuction apparatus connected with said air pocket, and a heating device in said chamber.

7. In an evaporator, the combination of an evaporating chamber, a'steam heated devi-ce'iu said chamber, flexible tubes connected respectively with the ends of said steam device and extending out of said chamber whereby to connect the device w-i'tlfthe source of steam and with an exhaust pipe,

and means for movingsaid device throughapath which will repeatedly carry it into and out of a fluid in said chamber, during the evaporation of a given charge of fluid.

8. In an evaporator, the combination of an evaporating chalmber,.' crank shaft, arms loosely hung on the cran s of said shaft, a frame loosely suspended from the lower ends of said arms, a steam heated device connected with said frame within said evaporating chamber.

loosely hung .on the cranks of said shaft, a

frame loosely suspended fron'rthe lower ends" of said arms, a steam heated device connected with said fram within said evaporating chamber, and means for 'producinga suction 1n said evaporating chamber;

both sides thereof separated therefrom by thin partition walls having near their upper ends openings through which the evaporating chamber is. placed in communication with said alr passages, a suct onapparatus;

connected --with the lower 'ends'of said air passages, and means for heating .the fluid I that may be placed in. said f'evaporatin'g chamber. 1 In testimony whereof, I hereunto affix my signature in'the re'sence of witnesses. I .ICHARDJ. COACH. Witnesses? W. C. HILL, F.- W. ZIMMER AN,

C. R. Mam e.

9. In an evaporator, the combination ofan' evaporating chamber-,a crank shaft, arms 10. In an evaporator, the combination ofan evaporat ng chamber, air passages on 

